TL;DR: Ice (Water Ice) is a main entry in the 外星矿物知识引擎 database.
Water ice is the single most valuable near-term space resource. Confirmed at lunar poles, Mars subsurface, and Ceres. In orbit, water is worth $10M+ per tonne as propellant. Water extraction from PSRs and asteroids is the foundation of the cislunar economy.
Formula
H₂O / H₂O·gas clathrate
Crystal System
Hexagonal (Ice Ih)
Occurrence
Lunar poles (PSRs), Mars subsurface, Ceres surface/subsurface, comet nuclei, C-type asteroids
Significance
Most valuable near-term space resource; enables propellant, life support, radiation shielding; gateway to cislunar economy
Source
LCROSS, LRO, MRO, Dawn, Rosetta